[ECOS] How to find out if socket closed?

[Grant Edwards]

On Fri, Jul 11, 2003 at 01:48:46PM -0500, Grant Edwards wrote:

> > >> I've been browsing around the old network stack code for a
> > >> couple hours now trying to figure out a way to determine if a
> > >> TCP connection has been closed by the other end.

[...]

> When the tcp input routine detects a FIN, it calls
> socantrcvmore(), which sets the SS_CANTRCVMORE bit in
> so->so_state.  
> 
> But I sure can't find any sort of system call which will tell
> me if that flag is set.  I suppose I could add a custom option
> to getsockopt(), but that sort of sucks for all the obvious
> reasons.

I'm pretty reluctant to try to maintain independent versions of
the stack, so...

If I submitted a patch (to the old stack) adding an ioctl that
returned the SS_CANTRECVMORE flag, what are the chances of it
being accepted?

-- 
Grant Edwards
grante@visi.com

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